Yard work noise: quieter tools and local rules

At the operator's ear, STIHL declares 97 dB(A) for its gas HS 45 hedge trimmer and 76 for the battery HSA 100. Gaps like that, printed by one maker for two of its own tools, are the strongest case for battery in a yard. They also describe only one of the two people listening.

Indoors, a loud machine is mostly a problem for the people who bought it. In the yard it belongs to the street: a leaf blower, a mower or a chainsaw is heard by the person holding it, by the family next door with the windows open, and by whoever is still asleep across the fence at the hour you start. Our guides to quiet yard tools keep the figures for those two audiences apart.

This page ties the guides together. It covers what the published figures mean, where a battery tool beats gas and where it barely does, which jobs the neighbors hear most, and how to plan the loud ones. Noise is the only subject here; for the hours your town allows any of this, check your local rules.

What is sound power level, and how is it different from sound at the ear?

Sound power, LWA, is what the tool sends into the neighborhood. The ear figure, LpA, is what you hear.

Most declared yard tool figures come from Europe. The European Commission describes the Outdoor Noise Directive, 2000/14/EC, as regulating the noise emissions into the environment by outdoor equipment, mainly machinery used on construction sites or in parks and gardens. Under it, a maker prints a guaranteed sound power level: a ceiling for the whole machine's acoustic output, set above the measured value, that the maker commits no unit will exceed. Most manuals then add LpA, the sound pressure where the operator's head is, taken under a named test.

STIHL alone uses four of those tests. Its FSA 57 trimmer is declared under EN 50636-2-91, its battery hedge trimmers under EN 62841-4-2, its battery chainsaws under EN 62841-4-1, and its pole saws and its gas trimmers, hedge trimmers and chainsaws under ISO 22868. A K value beside the figure gives the uncertainty, usually 2 or 3 dB(A).

Sound power is always the bigger number, and our guides never rank one quantity against the other. The FSA 57 shows why. EN 50636-2-91 puts it at 74 dB(A) at the ear, while its 2000/14/EC guaranteed figure is 91 dB(A): one trimmer, measured two ways. Our explainer on sound power vs sound pressure covers the mechanics.

Leaf blowers add a third kind of figure, taken 50 feet off under ANSI B175.2, which is roughly the neighbor's share. The June 2026 edition of Husqvarna's 125B manual shows how far apart the kinds sit for a single blower, with the operator's ear at 92.6 dB(A) and the ANSI B175.2 bystander at 72 dB(A).

Two more wrinkles run through the guides. STIHL's KombiSystem attachments and its gas pole pruners are declared as Lpeq, an average that includes idling and rated maximum speed, and because idle time pulls the average down, those figures sit in groups of their own. Many robot mower and pressure washer makers also print a bare number without saying which quantity it is. ECOVACS is the robot mower brand that does say, listing the GOAT O1000 with a sound power of 57 dB(A) and a sound pressure of 49 dB(A). A rival's bare 55 could describe either.

Eight yard machines and the figure to look for on each

A typical yard keeps up to eight machines that make noise, and the useful figure changes from one to the next. Each row pairs a machine with a model from our guides and with whoever hears it most.

Read each row by itself. A 54 taken at 50 feet and an 80 taken at the ear cannot settle which of two machines is the louder.

The second column is the one to plan with. A trimmer is mostly your problem and a blower mostly the street's, while a robot mower running at dawn belongs to whoever sleeps nearest the lawn.

Are battery yard tools quieter than gas?

On most yard tools, by a wide margin. The cleanest comparisons come from one maker declaring both kinds of tool under one test, and STIHL supplies most of them.

The 50 at the quiet end of the blower row belongs to STIHL's small 11 V BGA 30. ECHO's low-noise blowers are the quietest gas option, and they still sit above that whole battery range.

Mowers break the pattern. For the gas RM 655 V, STIHL gives 84 dB(A) at the operator and 98 dB(A) guaranteed. Its battery RMA 765 V declares the same 84 at the operator, under EN IEC 62841-4-3, and its battery RMA 756 V the same guaranteed 98. Going by those declarations, much of the cutting noise comes from the blade and deck rather than the motor. Battery keeps the edge when the mower idles, starts up or turns between passes, and there is no exhaust.

Quieter is still not quiet. At 83 dB(A) at the ear, the battery MSA 60 comes with STIHL's advice to wear ear defenders, and lawnmowers and leaf blowers both appear on a list of harmful household noises kept by the NIDCD, the US federal institute for deafness and communication disorders.

The yard tools neighbors hear most

Seven kinds of tool carry furthest: the leaf blower, the mower, the trimmer and edger, the saw, the tiller, the pressure washer and the snow blower.

Leaf blowers

Our guide to the quietest leaf blowers ranks only on the 50 ft bystander figure. It is the closest to what the street hears, and it is the basis some cities write into their blower rules.

STIHL's BGA 30 takes the top spot under ANSI/OPEI B175.2, 50 dB(A) from 50 ft away, though it is an 11 V blower sized for patios and paths. Among full-size blowers the Milwaukee 3017-20 leads, rated at 54 dB(A) on that same ANSI B175.2 test. Bare "dB" figures and operator's ear figures stay out of that ranking, and the guide also reads the manuals for running a blower more quietly.

Big yards call for a backpack. The quietest backpack leaf blowers are ranked on that same 50 ft figure: Makita's GBU04Z is rated at 60 dB(A), and the quietest gas backpacks, ECHO's PB-265LN and PB-760LNT, at 65.

Mowers, walk-behind and robot

Only Husqvarna prints a mower figure on a US page, our guide to the quietest lawn mowers found, so it gathers the rest from European manuals. EGO's LM2135SP maps to the EU LM2130E-SP, whose declaration gives the operator's ear 80.3 dB(A), K 3, plus a guaranteed 93 dB(A) under 2000/14/EC. The gas mower comparison above comes from that guide too.

For the rest of EGO's battery range, our EGO Power+ decibels page gathers the figures EGO declares in its European manuals for 27 tools it sells in the US.

With close neighbors who are still asleep, turn to the quietest battery lawn mowers. That guide ranks battery walk-behinds on guaranteed sound power instead, the figure for what the whole machine sends next door, and covers the ECO modes some makers add.

A robot mower works while you do not, often at dawn or dusk, the hours when the yard next door is quiet enough for it to carry. Published robot figures run from 55 dB to 65, and our guide to the quietest robot lawn mowers explains why they cannot be sorted straight down the list. It also covers wire, antenna and camera navigation and the two slope figures makers print.

Trimming and edging

These are the tools held closest to the head. Our guide to the quietest string trimmers sets out who declares under which standard and which US brands print nothing, including a whole product line sold on a percentage with no decibel behind it.

Hedge trimmers hold the clearest ranking in outdoor power, and the quietest hedge trimmers guide turned up a surprise. Under EN 62841-4-2, STIHL's small HSA 30 and HSA 40 reach 82 dB(A) at the operator's ear, above the 77 declared for the bigger, full size HSA 60 model.

On an edger the power head changes the figure. Our guide to the quietest lawn edgers covers standalone edgers and edger attachments; Makita's XUX02 with the EE400MP attachment declares 73.8 dB(A) at the ear under ISO11789, from the European manual for its twin, the DUX18.

Cutting wood

STIHL declares chainsaw figures in its international manuals and leaves them out of its North American ones. Our guide to the quietest chainsaws collects them, along with Husqvarna's Power Axe saws, including the 225i Power Axe, the quietest declared saw it found on Amazon.

A pole saw keeps the battery, the trigger and your ears at the bottom of the shaft while the chain works overhead, so our guide to the quietest pole saws ranks only within each test method. Under ISO 22868, STIHL's HTA 86 is declared at 77 dB(A) at the ear.

Working the soil

Our guide to the quietest tillers and cultivators is built on the STIHL table that isolates the engine: one attachment, one method, gas and battery side by side. Honda's walk-behind tillers, declared in European manuals, are covered there too, along with a figure printed with no weighting at all.

Washing

Only two brands publish anything for pressure washers, and they publish different things. Greenworks lists 68 dB with no basis stated, and Sun Joe a sound power of 96 dB(A). Our guide to the quietest pressure washers will not rank one against the other, and gas homeowner models get no figure at all from any US maker.

Narrowing to electric machines turned up a third maker. In the quietest electric pressure washers, four Karcher models carry 75 dB(A) of operator sound pressure in their US manuals, plus or minus an uncertainty of 3 dB(A).

Clearing snow

A snow blower often runs early on a winter morning, before the street is awake. For models sold in the US, real figures come from just two makers, EGO in its European manuals and Husqvarna, and our guide to the quietest snow blowers also covers when early clearing is allowed.

EGO's single-stage battery SNT2120AP has the lowest operator figure declared in a maker's manual, 80 dB(A) with a K of 4.

Machines that run for hours near the neighbors

Generators, home standby units, portable power stations and pool heat pumps are not loud for twenty minutes on a Saturday. They run steadily for hours, which makes them a different kind of neighbor problem.

Generator figures on the box rarely compare: one maker quotes a load, another a distance, a third neither, as our guide to the quietest generators for camping and RVs shows. Honda lists its EU2200i at 48 dB(A) on a quarter load and 57 on rated load, and its Sound Level Comparison chart places those readings at 7 meters. The same layout covers each current model on our Honda generator decibels page.

Safety outranks noise with any generator. The CPSC wants them run only outdoors, with at least 20 feet between the generator and any home and the exhaust aimed away. Our explainer on generator noise and neighbors builds a placement order on that rule, and adds what load, wind and campground generator hours change.

A home standby unit sits on a pad beside the house and runs a scheduled exercise, which is the noise neighbors hear most. The quietest home standby generators guide ranks exercise figures and running figures separately. Generac's 10kW model 7257 lists 49 dB(A) at 7 meters in its Quiet-Test low-speed mode, and the guide notes that a local noise ordinance is measured at the property line, not at 7 meters.

A 240 V portable that backs up a house runs for days, outside and 20 feet from it, which on most lots puts it near a window or a neighbor. Our guide to backup portable generators keeps each kind of figure apart; measured at 7 meters, Honda's EU7000iS is listed at 52 dB(A) on a quarter load and 58 on rated load.

A battery power station is silent until its fans spin up for fast charging or a heavy load, as the quietest portable power stations guide explains. DJI gives the Power 1000 a low of 23 dB, taken from 100 cm while it recharges in the 600W Standard Recharging Mode.

Pool heat pumps sit on a pad for months, and the pad often ends up closer to a bedroom window or the patio next door than intended. Our guide to the quietest pool heat pumps groups the figures by the distance each maker measures at and never ranks across groups. Madimack's InverELITE V2 84,000 prints "30.8 ~ 44.5" dB(A) at 10 ft, marked as sound pressure in its US manual. Hayward, Pentair and Jandy print no figure.

How often yard tools print the figure neighbors hear

Leaf blowers do it most: 28 of the 44 blowers in our catalog give a bystander reading at 50 feet under ANSI B175.2. The count comes from our product files as they stood on 26 October 2026, not from every blower on sale.

Each count comes from the noise entry for every leaf blower and hedge trimmer in those files, which quote the maker's page, manual or declaration. Two EGO models count among the 28; they state 65 dB(A) "at 50 feet" to "ANSI standards" without naming the part. Of the other 16 blowers, 10 print a bare US figure with no distance or standard, though four of those EGO models also carry an operator's ear figure in EGO's European manuals. Five give only ear or sound power figures. ECHO's DPB-5800T publishes nothing.

Hedge trimmers tell the other half of the story. All 15 in those files print a guaranteed sound power level, the whole machine's output into the neighborhood; 13 cite Directive 2000/14/EC for it, and the two Husqvarna models print theirs on US pages without naming the directive.

For the tools held at head height, then, the paperwork mostly describes the neighborhood and the operator, while for the blower it mostly describes the street. Nothing in the files describes your own property line, which is where many local rules are measured.

What do local noise rules for yard work look like?

They differ from one city or county to the next. The two examples below are quoted from local governments to show what such rules can contain. They are not legal advice, and your own code may differ.

Montgomery County, Maryland, has gone furthest on equipment. Its Department of Environmental Protection says: "Effective July 1, 2025, the use of handheld, backpack, and walk-behind gas-powered leaf removal equipment is banned in Montgomery County."

The same county sets time-based limits for all outdoor noise. Its noise control page lists "Residential Areas Daytime Noise Limit: 65 dBA" from 7:00 am to 9:00 pm on weekdays and from 9:00 am on weekends and holidays, and 55 dBA at night, limits it says are "measured outside at the property line."

Washington, DC bans one machine outright. The District's Department of Licensing and Consumer Protection says the 2018 act "prohibits the use of gasoline-powered leaf blowers in the District of Columbia", with fines "of up to $500 for each offense", and that it does not cover federally owned property.

None of these rules uses a maker's figure. A blower rated at 50 feet, or a trimmer rated at the ear, may read differently at your fence, so look up your own city or county code before choosing a tool or a time to run it.

Running loud tools without bothering the neighbors

The guides are about buying, but the makers' manuals also say a good deal about running a tool considerately.

Local rules come first. The EPA notes that state and local governments have taken on the responsibility of responding to many noise pollution matters, so which hours count is a local question.

After that, keep the throttle down to what the task needs. In ECHO's blower manual, the instruction is to go no faster than a task requires, since a blower gets louder as engine speed rises, and Husqvarna gives owners the same instruction. That is what the variable speed trigger on most of the guide's battery blowers is for. Run one machine at a time as well; according to EGO and ECHO, the fewer pieces of power equipment running together, the better.

Mind the cutting head and the power head. STIHL's FSA 86 R is declared at 77 dB(A) at the ear when fitted with the AutoCut head, and at 80 with the PolyCut. An attachment edger or cultivator declares differently on each power head, so check the row for the one you own.

The machines that run on their own need a schedule. ECOVACS stops its GOAT mowers at night by default, and whatever mower you own, its timer should start with the neighbors' mornings in mind. Economy mode, by the makers' account, quiets a generator engine on light loads, and once the load gets heavy the engine climbs back to full speed. DJI's manual describes Standard Recharge Mode as slower and quieter, which it says makes it the mode for overnight charging.

Place the pool heat pump with care. Aquastrong asks owners, in its manual, to site the heat pump where it will disturb the neighbors least, and Madimack says its Silence mode runs "3dB(A) lower than Boost mode".

Reading a yard tool decibel rating

Start with the quantity. A figure is at the ear, sound power (measured or guaranteed), a bystander reading at 50 feet, or a bare number with no basis, and only like compares with like. Then look for the test and setting: a named standard, a K value, a cutting head, a power head, a load. A figure that names none of these cannot be ranked against one that does.

Check where it was printed, too. Many of the best figures sit in European manuals for the same tool under a different model number, and our guides state each match and flag the weak ones.

Last, weigh the gap. The National Park Service's rule of thumb is that each 10 dB increase doubles how loud a sound seems, so the gas and battery gaps above are large. A decibel or two between brands is within the uncertainty most makers print.

To place a blower or mower figure among ordinary sounds, use our decibel chart. If you live in a flat with a shared wall rather than a fence, the machines that carry through floors and walls are the subject of keeping an apartment quiet.